I also have never heard of "dived". Maybe it's because we Americans have a way of butchering the English language.
Here is an example sentence:
"The dove saw a hawk and dove into the the bush."
(... to hide. Hawks prey on doves.)
Here the noun "dove" (for the bird) is pronounced duv.
While the action verb "dove" (past tense of dive) is pronounced dōv.
Even though they are written the same way, they have different pronunciation.
When spoken it is very apparent which word is which.
The 'duv' saw a hawk and 'dōv' into the the bush.
Of course they actually wouldn't be spelled that way. I only wrote them that way to show you the difference in pronunciation.
When the sentence is written instead of spoken, with both uses of "dove", it can be confusing to an English student, but it is very apparent which "dove" is pronounced which way to native speakers.
Even still, it will become easier to you the more you see it used.
For instance:
"Hoping to prevent its escape, the bird keeper dove after the dove as it flew away."
Here, I have reversed the order of "dove" and it is:
"Hoping to prevent its escape, the bird keeper 'dōv' after the 'duv' as it flew away."
I hope that helps!
